package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * @author 自然醒
 * @version 1.0
 */
@Service
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    @Autowired
    private DishMapper dishMapper;
    @Override
    @Transactional(rollbackFor = Exception.class)
    public void save(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.saveSetmeal(setmeal);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if(setmealDishes==null&&setmealDishes.isEmpty()){
            throw new RuntimeException(MessageConstant.SETMEAL_LOST_DISH);
        }
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmeal.getId());
        });
        setmealDishMapper.insertBatch(setmealDishes);

    }

    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(),setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> setmeals = setmealMapper.pageQuery(setmealPageQueryDTO);
        long total = setmeals.getTotal();
        List<SetmealVO> records = setmeals.getResult();
        return new PageResult(total,records);
    }

    @Override
    public SetmealVO getById(Long id) {
        Setmeal setmeal = setmealMapper.getInfoById(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal,setmealVO);
        setmealVO.setSetmealDishes(setmealDishMapper.getSetmealDishBySetmealId(setmealVO.getId()));
        return setmealVO;
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);
        setmealMapper.update(setmeal);
        setmealDishMapper.deleteBySetmealId(Collections.singletonList(setmealDTO.getId()));
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if(setmealDishes != null && !setmealDishes.isEmpty()){
            setmealDTO.getSetmealDishes().forEach(dish -> {
                dish.setSetmealId(setmeal.getId());
            });
        }
        setmealDishMapper.insertBatch(setmealDTO.getSetmealDishes());
    }

    @Override
    @Transactional(rollbackFor = Exception.class)
    public void deleteById(List<Long> ids) {
        ids.forEach(id -> {
            Setmeal setmeal = setmealMapper.getInfoById(id);
            if(setmeal.getStatus() == StatusConstant.ENABLE){
                throw new RuntimeException(MessageConstant.SETMEAL_ON_SALE);
            }
        });
        setmealMapper.deleteById(ids);
        setmealDishMapper.deleteBySetmealId(ids);
    }

    @Override
    public void startOrStop(Integer status, Long id) {
        if(status == StatusConstant.ENABLE){
            List<Dish> dishes = dishMapper.getDishBySetmealId(id);
            if(dishes != null && dishes.size() > 0){
                dishes.forEach(dish -> {
                    if(dish.getStatus() == StatusConstant.DISABLE){
                        throw new RuntimeException(MessageConstant.SETMEAL_ENABLE_FAILED);
                    }
                });
            }
        }
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }
}
